162021738 has 8 divisors (see below), whose sum is σ = 324043488. Its totient is φ = 54007244.

The previous prime is 162021731. The next prime is 162021749. The reversal of 162021738 is 837120261.

It is a sphenic number, since it is the product of 3 distinct primes.

162021738 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (162021731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13501806 + ... + 13501817.

It is an arithmetic number, because the mean of its divisors is an integer number (40505436).

Almost surely, 2^162021738 is an apocalyptic number.

162021738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162021738 is a wasteful number, since it uses less digits than its factorization.

162021738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27003628.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 162021738 is about 12728.7759820024. The cubic root of 162021738 is about 545.1605598254.

Adding to 162021738 its reverse (837120261), we get a palindrome (999141999).

The spelling of 162021738 in words is "one hundred sixty-two million, twenty-one thousand, seven hundred thirty-eight".